\begin{tikzpicture}
\node at (0,1) {Chunk:};
\node[draw,dashed] (h1) at (2,1) {$h_1$};
\node[draw,dashed] (h2) at (3,1) {$h_2$};
\node[draw,dashed] (h3) at (4,1) {$h_3$};
\node (dots) at (6,1) {$\cdots$};
\node[draw,dashed] (h128) at (8,1) {$h_{128}$};
\node[draw,fit=(h1) (h2) (h3) (dots) (h128)]{};
\end{tikzpicture}
